Loose leaf or refill book



Oct. 6, 1925. 1,556,049

E. A. TRUSSELL LOOSE LEAF OR REFILL BOOK Filed Nov. 28. 1923 avwewtoz v r ZMORYA.]/%USJELL. 7 Z a ike M4015 Patented a. 6, 1925.

UNITED STATES PATENT OFFICE EMORY L TRUSSELL, OF RICHMOND HILL, NEW YORK, ASSIGNOR OF ONE-THIRD TO CLARENCE D. TRUSSELL, 01E POUGHKEEPSIE, NEW YORK. A

LOOSE LEAF OR REFILL BOOK.

Application filed November 28, 1928. Serial No. 677,539.

To all whom it may concern:

Be it known that I, EMORY A. TRUSSELL,

a citizen of the United States, and resident of Richmond Hill, New York, have invented certain new and useful Improvements in Loose Leaf or Refill Books, of which the following is a specification.

My: invention is directed to cert-am features of improvement in the sheets of loose leaf binders or books and in the binding rings or prongs on which the leaves are mounted.

The accompanying drawings illustrate an embodiment of the invention.

Fig. 1 is a perspective view of a number of sheets or leaves illustrating the mounting of them on a binder ring;

Fig. 2 is a cross-section of the same;

Fig. 3 is a diagram illustrating the effect of the improvement.

Referring to the embodiment of the invention illustrated, the leaves 1 are provided near their inner edges with rectangular perforations 2 fitting easily on rings or prongs 3 of similar rectangular shape in cross-section bent upward from a back plate 4 which is mounted in a holder 5 adapted to be fastened between the covers of a book.

In turning over the leaves of such books, the inner edges 6'thereof rub to a greater or less extent against the inner faces of the rings, as illustrated for the uppermost sheet at the right in Fig. 2. This rubbing after a time tends to wear the edges of the sheets at these points and to produce an objection; able ragged appearance. Also the ragged worn edge tends to split through to the perforations 2 and to cause the leaves to escape from the rings.

Also in turning the leaves of such books, they are sometimes brought to the relative position of the leaves 1 shown in Fig. 3, with the inner edge of. one leaf adjacent to the edge of the perforation 2 of the next leaf. When these leaves are punched there is a slight burr on the edges of' the perforations. It is practically impossible to elimi nate this'burr, which is usually worst in the middle of a pack of sheets which are all punched at once. This is because the paper is punched not so much by the edge of the steel tool as by the paper which is forced ahead of the punch. With the ordinary leaves, having their inner edges straight,

there is a tendency of such an edge to catch occasionally on the burr of the perforation in the next sheet. Then when the book is closed the edge of the first sheet, the vertical one in Fig. 3, is crumpled or turned and this leaf is forced outward and held somewhat out of alignment with the remaining sheets.

I propose to avoid this disadvantage .by cutting the leaves in advance with recesses 7 at points opposite the. perforations 2. This tends to lessen the pressure of the edges of the leaves against the inner faces of the rings, to provide a smooth and regular edge forthe leaves which is less apt to start a tear, and particularly to avoid engagement of the edge of one leaf with the burr around the perforations of the next leaf. The recesses 7 are preferably made of smoothly rounded shape, as shown,

This improvement in the leaves may be used in connection with Various sorts of rings which are split or are capable of being opened and closed to permit withdrawal and insertion of leaves. Preferably, however, I use the particular style of binder as shown. The back plate 4 carrying the rings 3 is designed to be slid endwise into and out of the clip or holder 5 and to be held in place therein by friction' In an application No. 617,680, I have described a sort of loose leaf book called a refill book in which leaves are carried on a binder and are intended to be removed with the binder and to be replaced by a new package of leaves carried on their own binder. The binder described in said application uses entirely closed rings; that is, without any opening through which the leaves can be withdrawn.

According to my present invention, this binder is slightly modified to permit the insertion and removal of a few sheets, that is one or two, at a time. This is desirable because when a user wishes to introduce a new refill, there are sometimes leaves in the old book containing memoranda which are not obsolete and which he wishes to introduce with the new refill.

To permit this, I provide the rings 3 with a slight opening 8 at one end. This may be only 0.005 or 0.010 of an inch. These openings being at the ends of the rings, when the back plate 4 is slid into the clip or holder 5, the flange 9 on the latter prevents the sheets from coming out accidentally. But when the ring plate 4. is removed from the holder 5 it is easy to withdraw or insert leaves, one or two at a time, through the openings 8. Such binders will be useful and are designed particularly for leaves perforated and recessed as described, and may be used also with plain-edged leaves such as are shown in my previous application, and with leaves of various styles.

The improved leaves illustrated with recessed edges, may be produced as separate articles of manufacture for use with various styles of binder, or they may be'inarketed in combination with binders on which they are mounted fixedly or detachably.

Though I have. described with great particularity of detail certain embodiments of my invention, yet it is not to be understood therefrom that the invention is restricted to the particular embodiments disclosed. Various modifications thereof may be made by those skilled in the art without departure from the invent-ion as defined in the following claims. v

What I claim is:

1. A leaf for use in loose leaf binders having perforations near its inner edge to embrace the binder rings and having at its inner edge recesses at points opposite said perforations.

2. A leaf for use in loose leaf binders having perforations near its inner edge to embrace the binder rings and having at its inner edge curved recesses at points opposlte said perforations.

3. The combination with a binder having rings, of leaves having perforations near their inner edges embracing said rings and having recesses at their inner edges opposite said perforations.

4. The combination with a binder having rings of rectangular cross-section, of leaves having rectangular perforations near their inner edges embracing said rings and having curved recesses at their inner edges opposite said perforations.

5. The combination with a holder of a binder adaptedto be inserted into and withdrawn from the holder, said binder comprising a back plate carrying rings, and leaves having perforations embracing said rings and having recesses at their inner edges opposite said perforations.

6. The combination with a holder of a binder adapted to be inserted into and withdrawn from the holder, said binder comprising a back plate carrying rings projecting upward from one side and having their free ends approaching the face of the plate at the opposite side with a small space between said ends and the face of the plate through which a few leaves at a time can be removed or inserted, said holder having portions overlying said spaces so as to prevent accidental escape of the leaves.

In witness whereof, I have hereunto signed my name.

' EMORY A. TRUSSELL. 

